Improvement in slashers



J. m. amass, F. GREENE, & s. RANKIN.

' SLASHERS.

fiat-189.838. Patentea m 24,1877.

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UNITED STATES JOSEPH M. BRIGGS, JOHN F. GREENE, AND JAMES RADIKIN, orrEovInENo TEN RHODE ISLAND.

IMPROVEMENT IN S LASHERS.

Specification forming part of Letters Patent No. l S9,S3, dated April24, 1877; application. filed January 13, 1877.

To all whom it may concern Be it known that we, J osEPH M. Bsrecs, JoHNF. GREENE, and JAMES RADIKIN, all of the city and county of Providenceand State of Rhode Island, have invented a new and useful Improvement inSlashers, which improvement is fully set forth in the followingspecification, reference being had to the accompanying drawing.

In the sizing of warps in slashers, particularly when corn-starch isused as a sizing material, trouble is sometimes experienced inthoroughly and uniformly performing the work, owing to a foam whichcollects between the immersing-roll and the front of the sizebox,producing what are known as soft places in the warp. Trouble is alsoexperienced from the adherence to the yarn of the sediment of the sizeand the particles of film which form on the size when it is allowed tostand without use for a short time.

The object of our invention is to produce better warps by obviatingthose difliculties, which we accomplish by the use of what may be termeda flash-board, as hereinafter described.

Referring to the drawing, Figure l represents a top view of that portionof a slasher to which the sizing operation is confined. Fig. 2represents a vertical section of the same on line a w.

The operation of sizing yarns for warps is well known; but, for thepurpose of illustrating our improvement, a short description thereof issubjoined.

The size-box A being furnished with the requisite amount of sizingmaterial, the yarn a is delivered to it, over the roll I), from thebeams B, and passes through the size under the immersing-roll G, whichis so arranged, by means of the arms 0 and suitable mechanism, as to beraised or lowered, as desired, for the proper immersion of the yarn. Theyarn, after going through the size, passes onward between thecarrying-rolls D E and squeezing-rolls F G, onto the drying drums orcylinders.

In the slasher, as at present constructed, a certain amount of size, inexcess of that which finally adheres to the warp, is carried up by theyarn and rolls, and is shed off the face of the roll D, from which itflows in a frothy condition back over the roll 0, covering with foam thesize in that part of the box A where the yarn first enters.

Now, our improvement consists in the use of a flash-board, H, pivoted ateach end, on its upper edge, to the arms 0, and extending about thelength of the immersing-roll 0, its lower edge resting thereon.

This board is capable of free movement; but when the slasher is runningit occupies a position, as shown in the drawing, and operates to preventthe foam above mentioned from passing back over the roll (3, holding thesaid foam, together with a certain quantity of size, between itself andthe roll D, as shown in Fig. 2.

This body of foam and size flows rapidly ofl' toward the sides of thebox, and passes into the main body of size at the ends of the rolls, andthis rapid flow operates to free the yarn of size-sediment and particlesof film, which, without the use of the board, attach themselves to theyarn. The foam being prevented from passing back over the roll 0 intothe front of the box, the yarn enters clear size, instead of beingobliged to pass through the foam, as formerly, and the practical resultsare thoroughly and uniformly sized warps.

By the use of our improvement we obviate the imperfections in the warpscalled soft places where the warp is not sufficiently sized, and whichcause great trouble in weaving. These imperfections more frequentlyarise in the employment of corn-starch than in the employment ofpotato-starch, both of which are in general use for making size, but theformer being less expensive.

We also find a further result of this our imthe yarn, is deflectedtoward the ends of the yovement is, shat a thinner body of size mayimmersing-roll,substantially as desoribed,and

used with equally good effects. for thepurpose specified. gw'hat weclaim, and desire to secure by JOSEPH M. BRIGGS. ietters Patent, is JOHNF. GREENE. II; Slashers for sizing cotton-yarn for warps JAMES RADIKIN.g be used in weaving, a flash-board, H, in Witnesses:- :mbinamion withthe immersing-roll G, where- EDSON S. JONES, f; y the excess of size,which falls back from FRANK E. ROOKWOOD.

